package br.com.fidalgotecnologia.seguranca.filter;

import java.io.IOException;
import javax.servlet.DispatcherType;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;

import br.com.fidalgotecnologia.seguranca.entity.Usuario;

/**
 * Servlet Filter implementation class LoginFilter
 */
@WebFilter(dispatcherTypes = {DispatcherType.REQUEST, DispatcherType.FORWARD} , urlPatterns = { "/restrito/*" })
public class LoginFilter implements Filter {

    /**
     * Default constructor. 
     */
    public LoginFilter() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		if(!(req.getSession().getAttribute("UsuarioLogado") != null && req.getSession().getAttribute("UsuarioLogado") instanceof Usuario)){
			RequestDispatcher rd = req.getRequestDispatcher("/");
			rd.forward(request, response);
		}
		chain.doFilter(request, response);
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
